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| author |   Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:33 +1000 |
|---|---|---|
| committer | Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:33 +1000 |
| commit | 199050ea1ff2270174ee525b73bc4c3323098897 (patch) | |
| tree | b2a7851511b2ddb943b9ff7ce7c8a96c3ac2a8bb /drivers/md/multipath.c | |
| parent | Support adding a spare to a live md array with external metadata. (diff) | |
| download | linux-dev-199050ea1ff2270174ee525b73bc4c3323098897.tar.xz linux-dev-199050ea1ff2270174ee525b73bc4c3323098897.zip | |
rationalise return value for ->hot_add_disk method.
For all array types but linear, ->hot_add_disk returns 1 on
success, 0 on failure.
For linear, it returns 0 on success and -errno on failure.
This doesn't cause a functional problem because the ->hot_add_disk
function of linear is used quite differently to the others.
However it is confusing.
So convert all to return 0 for success or -errno on failure
and fix call sites to match.
Signed-off-by: Neil Brown <neilb@suse.de>
Diffstat (limited to 'drivers/md/multipath.c')
| -rw-r--r-- | drivers/md/multipath.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index 4a1d714c048e..541cbe3414bd 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -281,7 +281,7 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) { multipath_conf_t *conf = mddev->private; struct request_queue *q; - int found = 0; + int err = -EEXIST; int path; struct multipath_info *p; int first = 0; @@ -312,11 +312,13 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) rdev->raid_disk = path; set_bit(In_sync, &rdev->flags); rcu_assign_pointer(p->rdev, rdev); - found = 1; + err = 0; + break; } print_multipath_conf(conf); - return found; + + return err; } static int multipath_remove_disk(mddev_t *mddev, int number) |